Concrete mixer



Sept. 16, 1930. A. D. MOSBY 1,775,652

CONCRETE MIXER Original Filed Feb. 10. 1927 2 heets-Sheet l172116771257". v md l7 M0619 A. D. MOSBY CONCRETE MIXER Sept. 16, 1930.

Original Filed F eb. 10, 1927 2 Sheets-Sheet 2 17117677357 \fl Zfred Dmosy.

Patented Sept. 16, 1930 I UNITED sures mm NT em ALFRED D. MOSBY, OFCHICAGO, ILLINOIS; ASSIGNOR'TO EQUIPMENT CC)RI(.ZRA'IPIO'E AMERICA,QFOHICAGO, ILLINOIS, A CORPORATION OF DELAWARE CONCRETE MIXER Originalapplication filed liebruary 1Q, 1927, Serial No. 167,126. Divided andthis application filed.

7 September 30, 1927.

mum of cost,

J A further object is to provide a hitch in combination with thesupporting members of a concrete mixer, wh ch'hitch may be positionedout of obtrusive relationship with the i remainder of said mixer whensaid mixer is located at a certain definite place and which maybe movedto its operative position with a simple movement when it is desired touse said hitch for moving said concrete mixer.

Y A further object'qis to provide a supporting structure for a concretemixer which providesthe necessary stiffness in members which may bereadily shaped up out of rela tively light "metal. V A further object isto provide a concrete mixer having a mixing vessel and motive means forturning said vessel, both mounted upon a readily transportable truck,the parts aeing so arranged that the necessary stiffness is combinedwith ease of assembly and disassembly.

With theseand various other objects in drawings and claims appendedhereto.

In the drawings, which illustrate an embodiment of the device andwherein like reference characters are used to designate like parts vFigure 1 is a view in side elevation of a concrete mixer embodying theprinciples of the present invention, the hitch above referred to beingdisposed in unobtrusive relationship with the remainder of saidmechanism; i a l Figure 2 is a sectional'view taken substantially" inthe plane as indicated by the line 2-2 of Figure 1;

Figure 3 is a sectional View taken substan- Serial m. seams.

33 of Figure 1 Figure 3 is an end elevation taken substantially in theplane of the end wall of the housing shown in Figure 1; r

Figure 1 is a view on an enlarged scale talgen substantially in theplane as indicated by the'line 1- 1 of Figure 1 i Figure 5 is afragmentary view on an enarged scale showing a section takensubstantially inthe plane as indicated by the arrows 55 of Figure 1;

igure dis a sectional view on an enlarged scale taken substantially inthe same plane as Figure 2, that is-along the plane as indicated by theline 22 of Figure 1 but showing the hitch disposed in its operativerelationwith the remainder of the mechanism;

the front wall 11 and the two side walls 1212 flaring rearwardlytromsaid frontwall 11. Each of the side walls 12'tapers from a regionintermediate of its length to the upper and lower extremities of the leg10. The region of greatest depth of each side wall 12 provides attachingmeans for a corresponding side brace 13, which side braces may beordinary commercial channels Said side braces 13-13 are disposed inflaring relationship with one another, the angle between said braces1313 being substantially equal to the angle between the Walls l212 ofthe leg 10, wherebysaid braces 13 -18 may be united to said leg bysimple means involving only bolts or rivets, indicated by the numerals1414.- The rear portions of the braces 1313, which rear portions areindicated by the numerals 15-15, are disposed in parallel relationship awith each other and are supported upon the axle 16 brackets 171j7 beingprovided between said axle and saidportions 1515 of the braces 1313. Theaxle 16 carries the wheels 1818. The diameter of said wheels willpreferably be so chosen relative to the leg that the braces 13 13 willbe substantially parallel with the surface of the ground. The bottom ofthe leg 10 may be provided with the foot 19, which may be a simple pieceof sheet metal bent into angular form and riveted or otherwise securedto the leg 10.

Riveted or otherwise secured to the portions 1515 of the side braces1313 is the metal plate 20, which is preferably of triangular formationviewed lengthwise of the mixer, as clearly shown in Figure 3. The plateis provided with the side stiffening walls 21-21, the lower extremitiesof which are arranged in parallel relationship with one another and arespaced apart a sufficient distance to fit closely within the webs of thechannel members comprising the side braces 13, being secured to saidwebs by means of the rivets 22. The stiffenlng walls 2l21 are arrangedin converging relationship with one another and each of said wallspreferably tapers from its lower portion to the upper portion thereof.The upper portion of the plate 20 has secured thereto the bearing member 23, which bearing member has secured in cooperative relationtherewith the bearing member 24. Said bearing members 23 and 24 enclosethe shaft 25, which will be further referred to hereinafter. The upperextremity of the leg 10 is provided with a hearing member 26, which hassecured in cooperative relationship therewith the bearing member 27.Said bearing members 26 and 27 are preferably in alignment and enclosethe shaft 28, shown in dotted lines in Figure 1. Said shaft 28 and shaftare preferably arranged in alignment with one another. The numeral 29indicates a cradle or yoke, one end of which comprises the shaft 28immediately above rcferred to. The other end of said cradle 29 isapertured to receive the shaft 25 supported by the plate 20, eitherdirectly or indirectly. The shaft 25 may simply support the apert-uredcradle in the bearing of plate 20, or the cradle may be provided with anapertured trunnion supported by the plate 20, and shaft 25 rotatablymounted in said trunnion. Intermediate of the length of the cradle 29 isa pivotal bearing 30 for supporting the mixing vessel 31. Said mixingvessel or drum 3. is provided with the circular ack 32 engaged by thepinion 33. which pinion is secured to the shaft 25. The shaft 25 isdriven by any preferred motive means (not shown), which motive means maybe supported by the portions 15-15 of the side braces 1313. The motivemeans referred to is housed within the casing 34, one end of whichcasing is illustrated in Figure 3 hen the shaft 25 is driven by themotive means within the easing 34, power will be communicated throughthe pinion 33 to the circular rack 32 to rotate the vessel 31 to mix thematerials within said vessel 31. lVhen it is required to tilt the vessel31, this tilting action may be accomplished by turning the shaft 28.Means for accomplishing the rotation of the shaft 28 and for holdingsaid shaft in any preferred angular position will be referred topresently. From an inspection of Figure 3 it will be noted that the endwall 35 of the casing 34 is cut out to provide a substantially triangular aperture 36 defined by the walls 3737. Said end wall 35 is formed atthe upper portion with a continuation of said aperture 36 to clear theshaft 25. he plate 20 is of sufficient size to cover the aperture 36 inthe end wall 35 of the casing 34. By reason of the constructionillustrated, the casing 34 may be assembled upon the side braces 1313 ordisassembled therefrom without interfering with the shaft 25 or thebearings thereof.

The shaft 28, which controls the tilting of the mixing vessel 31, hassecured-thereto the 7 internal gear 38 adapted to be driven by thepinion 39, shown in dotted lines in Figure 1 and shown in full lines ona larger scale in Figure 4. Said pinion 39 is driven by the shaft 40(Figures 4 and 5), which shaft 40 may be driven by the hand wheel 41.Said shaft 40 is supported by the bracket 42, bolted or otherwisesecured to the forward face of the leg 10. Said bracket 42 is providedat its outer extremity with the split bearing43, which bearing isadapted to be contracted by means of the lever 44, which lever isadapted to apply a compressive action to said split bearing 43 throughthe cooperating cam members 45 and 46. In order to communicate saidcompressive force to the split bearing 43, said bearing is provided withthe two bosses 47 and 48, which bosses are normally separated anappreciable distance by thesplit 49.

Disposed in apertures in said bosses 4,7 and 48 is the shaft 50, oneterminal of which is providedwith the head 51 adapted to :bear againstthe bearing head 52, which in turn is adapted to communicate force tothe boss 4?. The extremity of the shaft 50 opposite from the head 51 isprovided with the nut 52, which maybe screw-threaded or keyed to saidshaft 50. t will be clear without detailed explanation that movement ofthe lever 44 about the .axis of the shaft 50 will v 31 may not betilted. However, when it is desired to tilt the mixing vessel 31, itisionly necessary to move the lever 44 to relieve-the grippingraction ofthe split bearing 43 upon the shaft 40, after which the hand wheel 41may be manipulated to turn the pinion I39,

internalgear 38 and cradl'e29 to tilt ing vessel 31.- i v The hitchabove referred to. for holding the concrete mixer is indicated by thenumeral i 'As illustrated,-, said member53 comprises a channel memberbent intermediate offits length to provide two parallel side walls54 landthe bent portion 55. The side walls 54:5-it are perforated adjacentto the bent portion 55-for the reception of a hand grip 56,-whichcomprises a simple straight bar. Said hitch 53 extends throughperforations '57 inthe front: wallll of the leg 10. 'In order to providethis perforation, themetal of said front-wall may be cut, and foldedvbackfto form the overlaps 58,58. Said foldedback portions 58-58reinforce the edges, which are subjected to considerablewear-froni the.hitch 53. Supported by the twoside braces 13- 13 in rear of the leg isthe shelf 59,-which may be secured to said side braces 1313 by anypreferred means. As shown, the shelf 59 is provided with the downwardlyextending flange 60 for stiffeningpurposes. Disposed symmetrithemixcally'of the width of the shelf 59 is the catch member 61 which mayberiveted or otherwise secured -tothe shelf 59.- Said catch'niember 61hasnat its-forward extremityt'he hooked over portion 62 and at .its'rear extremity the upwardly disposed end portion 63. Disposed betweenthe two inner extremities of the hitch 53 is'the rod 64:, which mayberiveted to the two side arms 54r54 of said hitch 53. .Folded around therod64 in a manner to have re tative movement with relation thereto,isthe strap 65.. The outer'swinging extremities of the folded strap orlink 65 may besecured together if preferred, or, as shown in Figure 7,may merely depend upon the stiffness of the material to maintain same inposition. A finger hold 66 is attached totheouter swinging extremity ofsaid strap or link 65. The folded over portion of the strap 65 has adiametrical dimension such that it may be more or less closely receivedwithin the hooked over portion 62 of the catch member 61. When saidfolded over end portion of the strap 65 is disposed within said hookportion 62 the outer swinging extremity of the strap 65 is disposedforwardly of the upturned flange 63 and adjacent thereto. It will benoted that when the hitch 53 is in operative relationship with theconcrete mixer, that is to saywhen the rod 64 with the folded over strap65 is disposed within the hook portion 62, a forward pull on the hitch53 will, be communicated to the concrete mixer through said hookportion62 of the catch member 61 and through the shelf 59 to the sidebraces 13--13. If a reverse movement should be given to the hitch53, theswinging extremities of the strap member will abut against the upturnedflange 63, resulting in a toggle action against the upper portion of thehook portion 62. Suclia reverse movement of the hitch 53 will thereforenot result in the disengagement of said hitch. It. will be observed thatwhen a reverse movement is communicated to the hitch 53 when the strap,65 is disposed between the hook portion 62 and the abutment 63, theparts will have a toggle action, the folded portion 64% of the straphaving an upward action against tremity of-the hitch 53 will rest uponthe axle 16. V 7

Though a preferred embodiment of the present invention has beendescribed in detail,vmany modifications will occur to those skilledin'the art. It is intended to cover all such modifications that fallwithin the scope' of the appended claims. i i What is claimed is f l Incombination, a forward leg, 'a rear axle, said leg comprising a channelmember, side braces connecting said forward leg'to said axle, a hitchdisposed within theweb of said channel, acatch member carried by saidbraces and catch means carried bysaid hitch, said catch means beingadapted to engage with saidcatchmember when a forward pull is exertedupon said hitch, said catch means comprising a pivoted member, saidcatch member having an abut-mentportion'and a hook adapted to cooperatewith saidpivot member and said hitch with a toggle action when a reversemovement is communicated to said hitch.

' '2. In a vehicle, in combination, supporting means, a catchmembercomprising a hook and a rear abutment, a hitch adapted to havesliding relationship "with said support means, said hitch having amember hinged to the rear extremity thereof,v said pivot memberbeingiadapted to seat itself within 'said'hook whereby pullingforce uponsaid hitch will be communicated to said hook and adapted to haveabutting relationship "withsaid rear abutmentiand withxsaid hook withatoggle action when a reverse movement is communicated .to said hitch. fi 3.. In'a vehicle, in combination, a front leg, a rear axle, sidebraces, a catch member supported by said cross braces, said'catch'member comprising a hook and a rear abutment member, and a hitchslidably disposedwith in. said leg and having a link pivoted to the rearextremity thereof, said link being adaptabutment and said hook when arearwardly directed-forceiis applied along said hitch.

4. In combination, a forward leg aflrear axle, braces connecting saidforward leg to said axle, a hitch comprising an elongated memberdisposed within an aperture in said forward leg and adapted when ininoperative position to have its rear extremity supported by said rearaxle, a link pivotally connected to the rear extremity of said elongatedmemher, and a catch member supported by said braces, said catch memberbeing provided with a hook portion adapted to have hooking engagementwith said elongated member, said catch member being provided with a rearabutment portion adapted to cooperate with said hook portion and saidlink to prevent the accidental disengagement of said elongated memberfrom said catch member.

5. In combination, front supporting means, a hitch adapted to beslidably supported by said front supporting means, means adapted tosupport the rear extremity of said hitch when said hitch is ininoperative position, a catch member rigidly secured with reference tosaid front leg, a link carried by said hitch, said catch member having afront hook and a rear abutment adapted to cooperate with said link witha toggle action to prevent accidental disengagement of said hitch fromsaid catch member.

6. -In a vehicle, in combination, a front leg and a rear axle, saidfront leg having a flat front wall, said flat front wall being providedwith an aperture, which aperture is provided by swedgingthe metalof'saidfront wall at the top and bottom'of said aperture into lappedrelationship with the adjoining portions of said front wall whereby toprovide longavearing bearing surfaces, a hitch slidably disposed withinsaid aperture and adapted to have bearing relationship with said rearaxle, and a catch member rigidly mounted with relation to said frontleg, said hitch being adapted to have hooking relationship with saidcatch member.

7. In a. vehicle, in combination, a front leg and-a rear axle, saidfront leg having a flat front wall, said flat front wall being providedwith an aperture, which aperture is provided by swedging the metalof-said front wall at the top and bottom of-said aperture into lappedrelationship with the adjoining portions of said front wall whereby toprovide long-wearing bearing surfaces, a hitch slidably disposed withinsaid aperture and adapted to have bearing reltionship with said rearaxle, and a catch member rigidly mounted with relation to said frontleg, said hitch being adapted to have hooking relationship with saidcatch member, said hitch being provided with a link at its rearextremity, said catch member being provided with a hook portion and anabutment portion adapted to have a toggle action relative to said linkwhereby to prevent the accidental disengagement of said hitch from saidcatch member.

8. In a vehicle, in combination, means for supporting the forwardextremity of said vehicle, wheels at the rear of said extremity of saidvehicle, a hitch adapted to have sliding relationship with saidsupporting means and adapted to be supported ata region near the rearextremity of said vehicle, and a catch member having hook portion and anabutment portion adapted tocoopera'te with said hitch with a toggleaction.

9. In a vehicle, the combination of, a supporting frame, supportingmembers for said frame, said members including a leg, and a wheel andaxle assembly spaced from said leg, means for moving said frame, saidmeans being supported directly by said leg and being adapted to besupported in inoperative position on said wheel and axle assembly, and amember carried by said frame normally dissociated from said means andadapted to be engaged by said means when said means is in operativeposition for movement of said frame.

10. In a vehicle, the-combination of a supporting frame, supportingmembers for said frame, said members including a leg, and a wheel andaxle assembly spaced from said leg, means for moving said frame, saidmeans being supported by said leg, and a member carried by said frameindependent of said means in inoperative position and adapted to beengaged by said means when said means is in operative position formovementof said frame.

Signed at Chicago, Illinois, this 24th day of September, 1927.

ALFRED D. MOSBY.

